CN203793326U - Trailer and parking brake circuit of semi-trailer tractor - Google Patents
Trailer and parking brake circuit of semi-trailer tractor Download PDFInfo
- Publication number
- CN203793326U CN203793326U CN201420141683.8U CN201420141683U CN203793326U CN 203793326 U CN203793326 U CN 203793326U CN 201420141683 U CN201420141683 U CN 201420141683U CN 203793326 U CN203793326 U CN 203793326U
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- trailer
- control valve
- parking
- pipeline
- hcv
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- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- Regulating Braking Force (AREA)
Abstract
The utility model discloses a trailer and parking brake circuit of a semi-trailer tractor. The trailer and parking brake circuit is characterized in that a gas outlet of a parking gas reservoir is communicated with a gas inlet of a trailer manual valve, a gas outlet of the trailer manual valve is communicated with a first control port of a trailer control valve, and a gas outlet of the trailer control valve is communicated with a control port of a trailer emergency relay valve; the gas outlet of the parking gas reservoir is further communicated with a gas inlet of a parking manual valve, and a second gas outlet of the parking manual valve is communicated with a second control port of the trailer control valve; the gas inlet of the parking manual valve is communicated with the second gas outlet when a handle of the parking manual valve is located at an initial position; the gas inlet of the trailer manual valve is not communicated with the gas outlet of the trailer manual valve when a handle of the trailer manual valve is located at an initial position. The trailer and parking brake circuit has the advantages that the trailer and parking brake circuit has few gas leakage potential hazard points, service brake and parking brake cannot be affected even if gas leaks at the gas outlet of the trailer manual valve or a second pipeline or the first control port of the trailer control valve, and accordingly the driving safety of the integral semi-trailer tractor can be improved.
Description
Technical field
The utility model relates to vehicle traction braking technology field, relates in particular to a kind of trailer and parking brake loop of semitrailer tractor.
Background technology
Semitrailer tractor is the important transportation means of logistic industry, semitrailer tractor comprises tractor truck and is pulled the trailer that car drags, and the trailer of semitrailer tractor and the leak tightness of parking brake loop, pressurize and mode etc. are very large on the braking performance of vehicle impact of semitrailer tractor.
With reference to Fig. 1, show the trailer of semitrailer tractor and the structural representation of parking brake loop in prior art, in figure, arrow represents air flow line, in prior art, the trailer of semitrailer tractor and parking brake loop comprise parking air receiver 1, parking hand control valve (HCV) 2, the first trailer hand control valve (HCV) 31, trailer air receiver 10, trailer emergency relay valve 9, trailer control valve 4, trailer brake 5, tractor truck drg 6, differential relay valve 7, the 8th pipeline 108, the 9th pipeline 109 and the tenth pipeline 110, wherein, the air extractor duct of parking air receiver 1 connects the admission port of parking hand control valve (HCV) 2 by the 8th pipeline 108, the first air extractor duct of parking hand control valve (HCV) 2 is sequentially communicated with the control mouth of trailer emergency relay valve 9 through the first trailer hand control valve (HCV) 31 and trailer control valve 4 by the 9th pipeline 109, trailer emergency relay valve 9 is connected with trailer air receiver 10 with admission port, the air extractor duct of trailer emergency relay valve 9 is communicated with the admission port of trailer brake 5, and the second air extractor duct of described parking hand control valve (HCV) 2 is also communicated with the admission port of tractor truck drg 6 through differential relay valve 7 by the tenth pipeline 110, in addition, when the handle of described the first trailer hand control valve (HCV) 31 is during in initial position, the admission port of described the first trailer hand control valve (HCV) 31 and air extractor duct are communicated with, i.e. under initial condition (while not controlling the handle of the first trailer hand control valve (HCV) 31), described the first trailer hand control valve (HCV) 31 is all the time in normal open state.
In above-mentioned prior art, the trailer of semitrailer tractor and the defect of parking brake loop are: the gas leakage hidden danger point of described brake circuit is more, and in loop between valve body and valve body tracheae for often there being atmospheric pressure state, if wherein any one leaks gas, car load brake system will be controlled whole trailer and the action of parking brake loop execution autobrake, yet the autobrake behavior of non-designability is that rules institute is unallowed, also has very large driving simultaneously dangerous.
Utility model content
The purpose of this utility model is to overcome deficiency of the prior art, and a kind of trailer and parking brake loop that can reduce gas leakage hidden danger point, improve the semitrailer tractor of travel safety is provided.
For achieving the above object, the technical solution of the utility model is:
A kind of trailer of semitrailer tractor and parking brake loop, comprise parking air receiver, trailer hand control valve (HCV), parking hand control valve (HCV), trailer control valve, trailer air receiver, trailer emergency relay valve, trailer brake, the first pipeline, second pipe, the 3rd pipeline, the 4th pipeline, the 11 pipeline and the 12 pipeline, the air extractor duct of wherein said parking air receiver is communicated with the admission port of described trailer hand control valve (HCV) by the first pipeline, the air extractor duct of described trailer hand control valve (HCV) is controlled mouth by first of second pipe and described trailer control valve and is communicated with, the air extractor duct of described trailer control valve is communicated with the control mouth of described trailer emergency relay valve by the 3rd pipeline, the admission port of described trailer emergency relay valve is communicated with described trailer air receiver by the 12 pipeline, the air extractor duct of described trailer emergency relay valve is communicated with the admission port of described trailer brake by the 11 pipeline, the air extractor duct of described parking air receiver is also communicated with the admission port of described parking hand control valve (HCV) by the 4th pipeline,
Described brake circuit also comprises the 5th pipeline, and the second air extractor duct of described parking hand control valve (HCV) is controlled mouth by second of described the 5th pipeline and described trailer control valve and is communicated with;
When the handle of described parking hand control valve (HCV) is during in initial position, the admission port of described parking hand control valve (HCV) and the second air extractor duct are communicated with;
When the handle of described trailer hand control valve (HCV) is during in initial position, admission port and the air extractor duct of described trailer hand control valve (HCV) are not communicated with.
Preferably, described brake circuit also comprises differential relay valve, tractor truck drg and the 6th pipeline, and the first air extractor duct of wherein said parking hand control valve (HCV) is communicated with the admission port of described tractor truck drg through described differential relay valve by described the 6th pipeline;
When the handle of described parking hand control valve (HCV) is during in initial position, the admission port of described parking hand control valve (HCV), the first air extractor duct and the second air extractor duct are communicated with.
Preferably, described brake circuit also comprises T-pipe joint and the 7th pipeline, the air extractor duct of wherein said parking air receiver is communicated with the admission port of T-pipe joint by described the 7th pipeline, the first air extractor duct of described T-pipe joint is communicated with the admission port of described trailer hand control valve (HCV) by described the first pipeline, and the second air extractor duct of described T-pipe joint is communicated with the admission port of described parking hand control valve (HCV) by described the 4th pipeline.
Preferably, described T-pipe joint is T-shaped T-pipe joint.
The beneficial effects of the utility model are, the gas leakage hidden danger point of brake circuit described in the utility model is few, even if the air extractor duct of trailer hand control valve (HCV) leaks gas, or when first of the second pipe being connected with the air extractor duct of trailer hand control valve (HCV) and trailer control valve controlled mouth generation gas leakage, can not affect service brake and braking during standstill yet, thereby effectively improved the travel safety of car load, prevented that semitrailer tractor from controlling mouthful dangerous situations such as autobrake that gas leakage occurs in when driving because of first of air extractor duct, second pipe and the trailer control valve of trailer hand control valve (HCV).
Accompanying drawing explanation
Fig. 1 shows the trailer of semitrailer tractor and the structural representation of parking brake loop in prior art;
Fig. 2 shows the trailer of the utility model embodiment semitrailer tractor and the structural representation of parking brake loop.
Description of reference numerals
1 parking air receiver 102 second pipes
2 parking hand control valve (HCV) 103 the 3rd pipelines
3 trailer hand control valve (HCV) 104 the 4th pipelines
31 first trailer hand control valve (HCV) 105 the 5th pipelines
4 trailer control valves 106 the 6th pipeline
5 trailer brake 107 the 7th pipeline
6 tractor truck drg 108 the 8th pipelines
7 differential relay valves 109 the 9th pipeline
8 T-pipe joints 110 the tenth pipeline
9 trailer emergency relay valve 111 the 11 pipelines
10 trailer air receiver 112 the 12 pipelines
101 first pipelines
The specific embodiment
Describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, only for explaining the utility model, and can not be interpreted as restriction of the present utility model.
With reference to Fig. 2, show the trailer of the utility model embodiment semitrailer tractor and the structural representation of parking brake loop, the trailer of described semitrailer tractor and parking brake loop, comprise parking air receiver 1, trailer hand control valve (HCV) 3, parking hand control valve (HCV) 2, trailer control valve 4, trailer air receiver 10, trailer emergency relay valve 9, trailer brake 5, tractor truck drg 6, differential relay valve 7, the first pipeline 101, second pipe 102, the 3rd pipeline 103, the 4th pipeline 104, the 5th pipeline 105, the 6th pipeline 106, the 11 pipeline 111 and the 12 pipeline 112.
Concrete wire connection structure is as follows: the air extractor duct of described parking air receiver 1 is communicated with the admission port of described trailer hand control valve (HCV) 3 by the first pipeline 101, the air extractor duct of described trailer hand control valve (HCV) 3 is controlled mouth by first of second pipe 102 and described trailer control valve 4 and is communicated with, the air extractor duct of described trailer control valve 4 is communicated with the control mouth of described trailer emergency relay valve 9 by the 3rd pipeline 103, the admission port of described trailer emergency relay valve 9 is communicated with trailer air receiver 10 by the 12 pipeline 112, the air extractor duct of described trailer emergency relay valve 9 is communicated with the admission port of trailer braking valve 5 by the 11 pipeline 111, the air extractor duct of described parking air receiver 1 is also communicated with the admission port of described parking hand control valve (HCV) 2 by the 4th pipeline 104, and the first air extractor duct of described parking hand control valve (HCV) 2 is communicated with the admission port of tractor truck drg 6 through differential relay valve 7 by described the 6th pipeline 106, when the handle of described parking hand control valve (HCV) 2 is during in initial position, the admission port of described parking hand control valve (HCV) 2, the first air extractor duct and the second air extractor duct are communicated with, i.e. under initial condition (while not controlling the handle of parking hand control valve (HCV) 2), described parking hand control valve (HCV) 2 is all the time in normal open state.
Especially, when the handle of described trailer hand control valve (HCV) 3 is during in initial position, admission port and the air extractor duct of described trailer hand control valve (HCV) 3 are not communicated with, i.e. under initial condition (while not controlling the handle of trailer hand control valve (HCV) 3), described trailer hand control valve (HCV) 3 is all the time in normal off state, and the air pressure of the air extractor duct of trailer hand control valve (HCV) 3 is 0.The second air extractor duct of described parking hand control valve (HCV) 2 is controlled mouth by second of described the 5th pipeline 105 and described trailer control valve 4 and is communicated with, thereby ought not control in the situation of handle of trailer hand control valve (HCV) 3, even if the air extractor duct of trailer hand control valve (HCV) 3 leaks gas, or when first of the second pipe 102 being connected with the air extractor duct of trailer hand control valve (HCV) 3 or trailer control valve 4 controlled mouth generation gas leakage, can not affect service brake and braking during standstill yet, can effectively improve the travel safety of car load like this, prevent semitrailer tractor air extractor duct because of trailer hand control valve (HCV) 3 when driving, first of second pipe 102 and trailer control valve 4 controlled mouthful gas leakage and the dangerous situations such as autobrake of generation.
Further, described brake circuit also comprises T-pipe joint 8 and the 7th pipeline 107, the air extractor duct of wherein said parking air receiver 1 is communicated with the admission port of T-pipe joint 8 by described the 7th pipeline 107, the first air extractor duct of described T-pipe joint 8 is communicated with the admission port of described trailer hand control valve (HCV) 3 by described the first pipeline 101, and the second air extractor duct of described T-pipe joint 8 is communicated with the admission port of described parking hand control valve (HCV) 2 by described the 4th pipeline 104.Especially, described T-pipe joint 8 is T-shaped T-pipe joint 8.
It should be noted that, the valve body adopting in brake circuit described in the utility model, specifically comprise parking hand control valve (HCV) 2, trailer hand control valve (HCV) 3, the first trailer hand control valve (HCV) 31, trailer brake 5, the urgent relay 9 of trailer, tractor truck drg 6 and differential relay valve 7, because above-mentioned valve body is the conventional valve body of those skilled in the art in prior art, so no longer repeat in this article for the inner structure of each valve body.
In addition, those skilled in the art should also be clear that the first control mouth of above-mentioned trailer control valve 4 corresponds to 41 of actual trailer control valve 4 and controls mouth, second of trailer control valve 4 is controlled 43 controls mouthful that mouth corresponds to actual trailer control valve 4, the second air extractor duct of parking hand control valve (HCV) 6 corresponds to the interface adjacent with the admission port of actual parking hand control valve (HCV) 6 (being generally 22 interfaces of parking hand control valve (HCV) 6), and the first air extractor duct of parking hand control valve (HCV) 6 corresponds to the interface (being generally 21 interfaces of parking hand control valve (HCV) 6) away from the admission port of actual parking hand control valve (HCV) 6.
Embodiment shown in above foundation is graphic describes structure of the present utility model, feature and action effect in detail; the foregoing is only preferred embodiment of the present utility model; but the utility model does not limit practical range with shown in drawing; every change of doing according to conception of the present utility model; or be revised as the equivalent embodiment of equivalent variations; when not exceeding yet specification sheets and illustrating contain spiritual, all should be in protection domain of the present utility model.
Claims (4)
1. the trailer of a semitrailer tractor and parking brake loop, comprise parking air receiver, trailer hand control valve (HCV), parking hand control valve (HCV), trailer control valve, trailer air receiver, trailer emergency relay valve, trailer brake, the first pipeline, second pipe, the 3rd pipeline, the 4th pipeline, the 11 pipeline and the 12 pipeline, the air extractor duct of wherein said parking air receiver is communicated with the admission port of described trailer hand control valve (HCV) by the first pipeline, the air extractor duct of described trailer hand control valve (HCV) is controlled mouth by first of second pipe and described trailer control valve and is communicated with, the air extractor duct of described trailer control valve is communicated with the control mouth of described trailer emergency relay valve by the 3rd pipeline, the admission port of described trailer emergency relay valve is communicated with described trailer air receiver by the 12 pipeline, the air extractor duct of described trailer emergency relay valve is communicated with the admission port of described trailer brake by the 11 pipeline, the air extractor duct of described parking air receiver is also communicated with the admission port of described parking hand control valve (HCV) by the 4th pipeline, it is characterized in that,
Described brake circuit also comprises the 5th pipeline, and the second air extractor duct of described parking hand control valve (HCV) is controlled mouth by second of described the 5th pipeline and described trailer control valve and is communicated with;
When the handle of described parking hand control valve (HCV) is during in initial position, the admission port of described parking hand control valve (HCV) and the second air extractor duct are communicated with;
When the handle of described trailer hand control valve (HCV) is during in initial position, admission port and the air extractor duct of described trailer hand control valve (HCV) are not communicated with.
2. the trailer of semitrailer tractor according to claim 1 and parking brake loop, it is characterized in that, described brake circuit also comprises differential relay valve, tractor truck drg and the 6th pipeline, and the first air extractor duct of wherein said parking hand control valve (HCV) is communicated with the admission port of described tractor truck drg through described differential relay valve by described the 6th pipeline;
When the handle of described parking hand control valve (HCV) is during in initial position, the admission port of described parking hand control valve (HCV), the first air extractor duct and the second air extractor duct are communicated with.
3. the trailer of semitrailer tractor according to claim 1 and 2 and parking brake loop, it is characterized in that, described brake circuit also comprises T-pipe joint and the 7th pipeline, the air extractor duct of wherein said parking air receiver is communicated with the admission port of T-pipe joint by described the 7th pipeline, the first air extractor duct of described T-pipe joint is communicated with the admission port of described trailer hand control valve (HCV) by described the first pipeline, and the second air extractor duct of described T-pipe joint is communicated with the admission port of described parking hand control valve (HCV) by described the 4th pipeline.
4. the trailer of semitrailer tractor according to claim 3 and parking brake loop, is characterized in that, described T-pipe joint is T-shaped T-pipe joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420141683.8U CN203793326U (en) | 2014-03-26 | 2014-03-26 | Trailer and parking brake circuit of semi-trailer tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420141683.8U CN203793326U (en) | 2014-03-26 | 2014-03-26 | Trailer and parking brake circuit of semi-trailer tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203793326U true CN203793326U (en) | 2014-08-27 |
Family
ID=51375571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420141683.8U Expired - Lifetime CN203793326U (en) | 2014-03-26 | 2014-03-26 | Trailer and parking brake circuit of semi-trailer tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203793326U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107336700A (en) * | 2016-12-19 | 2017-11-10 | 安徽江淮汽车集团股份有限公司 | A kind of emergency vehicle method and system in slope |
| CN110304032A (en) * | 2019-05-31 | 2019-10-08 | 东风商用车有限公司 | A kind of main trailer parking control system and its control method |
| CN113119933A (en) * | 2021-04-06 | 2021-07-16 | 广州瑞立科密汽车电子股份有限公司 | Trailer line control unit and brake system |
| CN113415263A (en) * | 2021-07-29 | 2021-09-21 | 东风商用车有限公司 | Vehicle and control hand valve assembly thereof |
-
2014
- 2014-03-26 CN CN201420141683.8U patent/CN203793326U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107336700A (en) * | 2016-12-19 | 2017-11-10 | 安徽江淮汽车集团股份有限公司 | A kind of emergency vehicle method and system in slope |
| CN107336700B (en) * | 2016-12-19 | 2019-05-21 | 安徽江淮汽车集团股份有限公司 | A kind of emergency vehicle method and system in slope |
| CN110304032A (en) * | 2019-05-31 | 2019-10-08 | 东风商用车有限公司 | A kind of main trailer parking control system and its control method |
| CN113119933A (en) * | 2021-04-06 | 2021-07-16 | 广州瑞立科密汽车电子股份有限公司 | Trailer line control unit and brake system |
| CN113415263A (en) * | 2021-07-29 | 2021-09-21 | 东风商用车有限公司 | Vehicle and control hand valve assembly thereof |
| CN113415263B (en) * | 2021-07-29 | 2022-02-18 | 东风商用车有限公司 | Vehicle and control hand valve assembly thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Hefei City, Anhui Province, 230022 East Road No. 176 Patentee after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: Hefei City, Anhui Province, 230022 East Road No. 176 Patentee before: Anhui Jianghuai Automobile Co., Ltd. |